The vehicle has a shoulder belt height adjuster for the driver and right front passenger seating positions.
Adjust the height so the shoulder portion of the belt is on the shoulder and not falling off of it. The belt should be close to, but not contacting, the neck. Improper shoulder belt height adjustment could reduce the effectiveness of the safety belt in a crash. See How to Wear Safety Belts Properly.

To move it down, press the release button and move the height adjuster to the desired position.
After the adjuster is set to the desired position, try to move it down without pressing the release button to make sure it has locked into position.
Lap-Shoulder Belt
Safety Belt PretensionersCenter Pillar Upper Trim Panel Replacement
Center Pillar Upper Trim Panel Replacement
Callout
Component Name
Preliminary Procedure
Remove the center pillar lower trim panel. Refer to Center Pillar
Lower Trim Panel Replacement.
Remove the seat belt from the front s ...
Selector and Shift Lever Cable Bracket Replacement
Removal Procedure
Remove the battery tray. Refer to
Battery Tray Replacement.
Disconnect the shift lever and selector lever cable
end (1) from the transmission shift lever and selector lever.
Pull the cable retainers (2) to release the shift
le ...
Turning the AEB with Pedestrian Detection system ON/OFF
AEB system OFF warning light (on the meter panel)
Vehicle information display
Steering-wheel-mounted controls (right side)
In the Nissan Armada, the Automatic Emergency Braking (AEB) with Pedestrian Detection
system can be enabled or disabled through the vehicle information display. ...